libev/event.c

/*
 * libevent compatibility layer
 *
 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modifica-
 * tion, are permitted provided that the following conditions are met:
 * 
 *   1.  Redistributions of source code must retain the above copyright notice,
 *       this list of conditions and the following disclaimer.
 * 
 *   2.  Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Alternatively, the contents of this file may be used under the terms of
 * the GNU General Public License ("GPL") version 2 or any later version,
 * in which case the provisions of the GPL are applicable instead of
 * the above. If you wish to allow the use of your version of this file
 * only under the terms of the GPL and not to allow others to use your
 * version of this file under the BSD license, indicate your decision
 * by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL. If you do not delete the
 * provisions above, a recipient may use your version of this file under
 * either the BSD or the GPL.
 */

#include <stddef.h>
#include <stdlib.h>
#include <assert.h>

#ifndef WIN32
# include <sys/time.h>
#endif

#ifdef EV_EVENT_H
# include EV_EVENT_H
#else
# include "event.h"
#endif

#if EV_MULTIPLICITY
# define dLOOPev struct ev_loop *loop = (struct ev_loop *)ev->ev_base
# define dLOOPbase struct ev_loop *loop = (struct ev_loop *)base
#else
# define dLOOPev
# define dLOOPbase
#endif

/* never accessed, will always be cast from/to ev_loop */
struct event_base
{
  int dummy;
};

static struct event_base *ev_x_cur;

static void
ev_tv_set (struct timeval *tv, ev_tstamp at)
{
  tv->tv_sec  = (long)at;
  tv->tv_usec = (long)((at - (ev_tstamp)tv->tv_sec) * 1e6);
}

static ev_tstamp
ev_tv_get (struct timeval *tv)
{
  if (tv)
    return tv->tv_sec + tv->tv_usec * 1e-6;
  else
    return -1.;
}

#define EVENT_VERSION(a,b) # a "." # b

const char *event_get_version (void)
{
  return EVENT_VERSION (EV_VERSION_MAJOR, EV_VERSION_MINOR);
}

const char *event_get_method (void)
{
  return "libev";
}

void *event_init (void)
{
#if EV_MULTIPLICITY
  if (ev_x_cur)
    ev_x_cur = (struct event_base *)ev_loop_new (EVFLAG_AUTO);
  else
    ev_x_cur = (struct event_base *)ev_default_loop (EVFLAG_AUTO);
#else
  assert (("multiple event bases not supported when not compiled with EV_MULTIPLICITY", !ev_x_cur));

  ev_x_cur = (struct event_base *)(long)ev_default_loop (EVFLAG_AUTO);
#endif

  return ev_x_cur;
}

void event_base_free (struct event_base *base)
{
  dLOOPbase;

#if EV_MULTIPLICITY
  if (ev_default_loop (EVFLAG_AUTO) != loop)
    ev_loop_destroy (loop);
#endif
}

int event_dispatch (void)
{
  return event_base_dispatch (ev_x_cur);
}

#ifdef EV_STANDALONE
void event_set_log_callback (event_log_cb cb)
{
  /* nop */
}
#endif

int event_loop (int flags)
{
  return event_base_loop (ev_x_cur, flags);
}

int event_loopexit (struct timeval *tv)
{
  return event_base_loopexit (ev_x_cur, tv);
}

static void
ev_x_cb (struct event *ev, int revents)
{
  revents &= EV_READ | EV_WRITE | EV_TIMEOUT | EV_SIGNAL;

  ev->ev_res = revents;
  ev->ev_callback (ev->ev_fd, (short)revents, ev->ev_arg);
}

static void
ev_x_cb_sig (EV_P_ struct ev_signal *w, int revents)
{
  struct event *ev = (struct event *)(((char *)w) - offsetof (struct event, iosig.sig));

  if (revents & EV_ERROR)
    event_del (ev);

  ev_x_cb (ev, revents);
}

static void
ev_x_cb_io (EV_P_ struct ev_io *w, int revents)
{
  struct event *ev = (struct event *)(((char *)w) - offsetof (struct event, iosig.io));

  if ((revents & EV_ERROR) || !(ev->ev_events & EV_PERSIST))
    event_del (ev);

  ev_x_cb (ev, revents);
}

static void
ev_x_cb_to (EV_P_ struct ev_timer *w, int revents)
{
  struct event *ev = (struct event *)(((char *)w) - offsetof (struct event, to));

  event_del (ev);

  ev_x_cb (ev, revents);
}

void event_set (struct event *ev, int fd, short events, void (*cb)(int, short, void *), void *arg)
{
  if (events & EV_SIGNAL)
    ev_init (&ev->iosig.sig, ev_x_cb_sig);
  else
    ev_init (&ev->iosig.io, ev_x_cb_io);

  ev_init (&ev->to, ev_x_cb_to);

  ev->ev_base     = ev_x_cur; /* not threadsafe, but it's how libevent works */
  ev->ev_fd       = fd;
  ev->ev_events   = events;
  ev->ev_pri      = 0;
  ev->ev_callback = cb;
  ev->ev_arg      = arg;
  ev->ev_res      = 0;
  ev->ev_flags    = EVLIST_INIT;
}

int event_once (int fd, short events, void (*cb)(int, short, void *), void *arg, struct timeval *tv)
{
  return event_base_once (ev_x_cur, fd, events, cb, arg, tv);
}

int event_add (struct event *ev, struct timeval *tv)
{
  dLOOPev;

  if (ev->ev_events & EV_SIGNAL)
    {
      if (!ev_is_active (&ev->iosig.sig))
        {
          ev_signal_set (&ev->iosig.sig, ev->ev_fd);
          ev_signal_start (EV_A_ &ev->iosig.sig);

          ev->ev_flags |= EVLIST_SIGNAL;
        }
    }
  else if (ev->ev_events & (EV_READ | EV_WRITE))
    {
      if (!ev_is_active (&ev->iosig.io))
        {
          ev_io_set (&ev->iosig.io, ev->ev_fd, ev->ev_events & (EV_READ | EV_WRITE));
          ev_io_start (EV_A_ &ev->iosig.io);

          ev->ev_flags |= EVLIST_INSERTED;
        }
    }

  if (tv)
    {
      ev->to.repeat = ev_tv_get (tv);
      ev_timer_again (EV_A_ &ev->to);
      ev->ev_flags |= EVLIST_TIMEOUT;
    }
  else
    {
      ev_timer_stop (EV_A_ &ev->to);
      ev->ev_flags &= ~EVLIST_TIMEOUT;
    }

  ev->ev_flags |= EVLIST_ACTIVE;

  return 0;
}

int event_del (struct event *ev)
{
  dLOOPev;

  if (ev->ev_events & EV_SIGNAL)
    ev_signal_stop (EV_A_ &ev->iosig.sig);
  else if (ev->ev_events & (EV_READ | EV_WRITE))
    ev_io_stop (EV_A_ &ev->iosig.io);

  if (ev_is_active (&ev->to))
    ev_timer_stop (EV_A_ &ev->to);

  ev->ev_flags = EVLIST_INIT;

  return 0;
}

void event_active (struct event *ev, int res, short ncalls)
{
  dLOOPev;

  if (res & EV_TIMEOUT)
    ev_feed_event (EV_A_ &ev->to, res & EV_TIMEOUT);

  if (res & EV_SIGNAL)
    ev_feed_event (EV_A_ &ev->iosig.sig, res & EV_SIGNAL);

  if (res & (EV_READ | EV_WRITE))
    ev_feed_event (EV_A_ &ev->iosig.io, res & (EV_READ | EV_WRITE));
}

int event_pending (struct event *ev, short events, struct timeval *tv)
{
  short revents = 0;
  dLOOPev;

  if (ev->ev_events & EV_SIGNAL)
    {
      /* sig */
      if (ev_is_active (&ev->iosig.sig) || ev_is_pending (&ev->iosig.sig))
        revents |= EV_SIGNAL;
    }
  else if (ev->ev_events & (EV_READ | EV_WRITE))
    {
      /* io */
      if (ev_is_active (&ev->iosig.io) || ev_is_pending (&ev->iosig.io))
        revents |= ev->ev_events & (EV_READ | EV_WRITE);
    }

  if (ev->ev_events & EV_TIMEOUT || ev_is_active (&ev->to) || ev_is_pending (&ev->to))
    {
      revents |= EV_TIMEOUT;

      if (tv)
        ev_tv_set (tv, ev_now (EV_A)); /* not sure if this is right :) */
    }

  return events & revents;
}

int event_priority_init (int npri)
{
  return event_base_priority_init (ev_x_cur, npri);
}

int event_priority_set (struct event *ev, int pri)
{
  ev->ev_pri = pri;

  return 0;
}

int event_base_set (struct event_base *base, struct event *ev)
{
  ev->ev_base = base;

  return 0;
}

int event_base_loop (struct event_base *base, int flags)
{
  dLOOPbase;

  ev_loop (EV_A_ flags);

  return 0;
}

int event_base_dispatch (struct event_base *base)
{
  return event_base_loop (base, 0);
}

static void
ev_x_loopexit_cb (int revents, void *base)
{
  dLOOPbase;

  ev_unloop (EV_A_ EVUNLOOP_ONE);
}

int event_base_loopexit (struct event_base *base, struct timeval *tv)
{
  ev_tstamp after = ev_tv_get (tv);
  dLOOPbase;

  ev_once (EV_A_ -1, 0, after >= 0. ? after : 0., ev_x_loopexit_cb, (void *)base);

  return 0;
}

struct ev_x_once
{
  int fd;
  void (*cb)(int, short, void *);
  void *arg;
};

static void
ev_x_once_cb (int revents, void *arg)
{
  struct ev_x_once *once = (struct ev_x_once *)arg;

  once->cb (once->fd, (short)revents, once->arg);
  free (once);
}

int event_base_once (struct event_base *base, int fd, short events, void (*cb)(int, short, void *), void *arg, struct timeval *tv)
{
  struct ev_x_once *once = (struct ev_x_once *)malloc (sizeof (struct ev_x_once));
  dLOOPbase;

  if (!once)
    return -1;

  once->fd  = fd;
  once->cb  = cb;
  once->arg = arg;

  ev_once (EV_A_ fd, events & (EV_READ | EV_WRITE), ev_tv_get (tv), ev_x_once_cb, (void *)once);

  return 0;
}

int event_base_priority_init (struct event_base *base, int npri)
{
  /*dLOOPbase;*/

  return 0;
}

Revision:	1.37
Committed:	Wed Oct 29 17:50:57 2008 UTC (15 years, 6 months ago) by root
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rel-3_48
Changes since 1.36:	+35 -35 lines
Log Message:	* empty log message *
#	Content
1	/*
2	* libevent compatibility layer
3	*
4	* Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>
5	* All rights reserved.
6	*
7	* Redistribution and use in source and binary forms, with or without modifica-
8	* tion, are permitted provided that the following conditions are met:
9	*
10	* 1. Redistributions of source code must retain the above copyright notice,
11	* this list of conditions and the following disclaimer.
12	*
13	* 2. Redistributions in binary form must reproduce the above copyright
14	* notice, this list of conditions and the following disclaimer in the
15	* documentation and/or other materials provided with the distribution.
16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20	* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
25	* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
26	* OF THE POSSIBILITY OF SUCH DAMAGE.
27	*
28	* Alternatively, the contents of this file may be used under the terms of
29	* the GNU General Public License ("GPL") version 2 or any later version,
30	* in which case the provisions of the GPL are applicable instead of
31	* the above. If you wish to allow the use of your version of this file
32	* only under the terms of the GPL and not to allow others to use your
33	* version of this file under the BSD license, indicate your decision
34	* by deleting the provisions above and replace them with the notice
35	* and other provisions required by the GPL. If you do not delete the
36	* provisions above, a recipient may use your version of this file under
37	* either the BSD or the GPL.
38	*/
39
40	#include <stddef.h>
41	#include <stdlib.h>
42	#include <assert.h>
43
44	#ifndef WIN32
45	# include <sys/time.h>
46	#endif
47
48	#ifdef EV_EVENT_H
49	# include EV_EVENT_H
50	#else
51	# include "event.h"
52	#endif
53
54	#if EV_MULTIPLICITY
55	# define dLOOPev struct ev_loop loop = (struct ev_loop )ev->ev_base
56	# define dLOOPbase struct ev_loop loop = (struct ev_loop )base
57	#else
58	# define dLOOPev
59	# define dLOOPbase
60	#endif
61
62	/* never accessed, will always be cast from/to ev_loop */
63	struct event_base
64	{
65	int dummy;
66	};
67
68	static struct event_base *ev_x_cur;
69
70	static void
71	ev_tv_set (struct timeval *tv, ev_tstamp at)
72	{
73	tv->tv_sec = (long)at;
74	tv->tv_usec = (long)((at - (ev_tstamp)tv->tv_sec) * 1e6);
75	}
76
77	static ev_tstamp
78	ev_tv_get (struct timeval *tv)
79	{
80	if (tv)
81	return tv->tv_sec + tv->tv_usec * 1e-6;
82	else
83	return -1.;
84	}
85
86	#define EVENT_VERSION(a,b) # a "." # b
87
88	const char *event_get_version (void)
89	{
90	return EVENT_VERSION (EV_VERSION_MAJOR, EV_VERSION_MINOR);
91	}
92
93	const char *event_get_method (void)
94	{
95	return "libev";
96	}
97
98	void *event_init (void)
99	{
100	#if EV_MULTIPLICITY
101	if (ev_x_cur)
102	ev_x_cur = (struct event_base *)ev_loop_new (EVFLAG_AUTO);
103	else
104	ev_x_cur = (struct event_base *)ev_default_loop (EVFLAG_AUTO);
105	#else
106	assert (("multiple event bases not supported when not compiled with EV_MULTIPLICITY", !ev_x_cur));
107
108	ev_x_cur = (struct event_base *)(long)ev_default_loop (EVFLAG_AUTO);
109	#endif
110
111	return ev_x_cur;
112	}
113
114	void event_base_free (struct event_base *base)
115	{
116	dLOOPbase;
117
118	#if EV_MULTIPLICITY
119	if (ev_default_loop (EVFLAG_AUTO) != loop)
120	ev_loop_destroy (loop);
121	#endif
122	}
123
124	int event_dispatch (void)
125	{
126	return event_base_dispatch (ev_x_cur);
127	}
128
129	#ifdef EV_STANDALONE
130	void event_set_log_callback (event_log_cb cb)
131	{
132	/* nop */
133	}
134	#endif
135
136	int event_loop (int flags)
137	{
138	return event_base_loop (ev_x_cur, flags);
139	}
140
141	int event_loopexit (struct timeval *tv)
142	{
143	return event_base_loopexit (ev_x_cur, tv);
144	}
145
146	static void
147	ev_x_cb (struct event *ev, int revents)
148	{
149	revents &= EV_READ \| EV_WRITE \| EV_TIMEOUT \| EV_SIGNAL;
150
151	ev->ev_res = revents;
152	ev->ev_callback (ev->ev_fd, (short)revents, ev->ev_arg);
153	}
154
155	static void
156	ev_x_cb_sig (EV_P_ struct ev_signal *w, int revents)
157	{
158	struct event ev = (struct event )(((char *)w) - offsetof (struct event, iosig.sig));
159
160	if (revents & EV_ERROR)
161	event_del (ev);
162
163	ev_x_cb (ev, revents);
164	}
165
166	static void
167	ev_x_cb_io (EV_P_ struct ev_io *w, int revents)
168	{
169	struct event ev = (struct event )(((char *)w) - offsetof (struct event, iosig.io));
170
171	if ((revents & EV_ERROR) \|\| !(ev->ev_events & EV_PERSIST))
172	event_del (ev);
173
174	ev_x_cb (ev, revents);
175	}
176
177	static void
178	ev_x_cb_to (EV_P_ struct ev_timer *w, int revents)
179	{
180	struct event ev = (struct event )(((char *)w) - offsetof (struct event, to));
181
182	event_del (ev);
183
184	ev_x_cb (ev, revents);
185	}
186
187	void event_set (struct event ev, int fd, short events, void (cb)(int, short, void ), void arg)
188	{
189	if (events & EV_SIGNAL)
190	ev_init (&ev->iosig.sig, ev_x_cb_sig);
191	else
192	ev_init (&ev->iosig.io, ev_x_cb_io);
193
194	ev_init (&ev->to, ev_x_cb_to);
195
196	ev->ev_base = ev_x_cur; /* not threadsafe, but it's how libevent works */
197	ev->ev_fd = fd;
198	ev->ev_events = events;
199	ev->ev_pri = 0;
200	ev->ev_callback = cb;
201	ev->ev_arg = arg;
202	ev->ev_res = 0;
203	ev->ev_flags = EVLIST_INIT;
204	}
205
206	int event_once (int fd, short events, void (cb)(int, short, void ), void arg, struct timeval tv)
207	{
208	return event_base_once (ev_x_cur, fd, events, cb, arg, tv);
209	}
210
211	int event_add (struct event ev, struct timeval tv)
212	{
213	dLOOPev;
214
215	if (ev->ev_events & EV_SIGNAL)
216	{
217	if (!ev_is_active (&ev->iosig.sig))
218	{
219	ev_signal_set (&ev->iosig.sig, ev->ev_fd);
220	ev_signal_start (EV_A_ &ev->iosig.sig);
221
222	ev->ev_flags \|= EVLIST_SIGNAL;
223	}
224	}
225	else if (ev->ev_events & (EV_READ \| EV_WRITE))
226	{
227	if (!ev_is_active (&ev->iosig.io))
228	{
229	ev_io_set (&ev->iosig.io, ev->ev_fd, ev->ev_events & (EV_READ \| EV_WRITE));
230	ev_io_start (EV_A_ &ev->iosig.io);
231
232	ev->ev_flags \|= EVLIST_INSERTED;
233	}
234	}
235
236	if (tv)
237	{
238	ev->to.repeat = ev_tv_get (tv);
239	ev_timer_again (EV_A_ &ev->to);
240	ev->ev_flags \|= EVLIST_TIMEOUT;
241	}
242	else
243	{
244	ev_timer_stop (EV_A_ &ev->to);
245	ev->ev_flags &= ~EVLIST_TIMEOUT;
246	}
247
248	ev->ev_flags \|= EVLIST_ACTIVE;
249
250	return 0;
251	}
252
253	int event_del (struct event *ev)
254	{
255	dLOOPev;
256
257	if (ev->ev_events & EV_SIGNAL)
258	ev_signal_stop (EV_A_ &ev->iosig.sig);
259	else if (ev->ev_events & (EV_READ \| EV_WRITE))
260	ev_io_stop (EV_A_ &ev->iosig.io);
261
262	if (ev_is_active (&ev->to))
263	ev_timer_stop (EV_A_ &ev->to);
264
265	ev->ev_flags = EVLIST_INIT;
266
267	return 0;
268	}
269
270	void event_active (struct event *ev, int res, short ncalls)
271	{
272	dLOOPev;
273
274	if (res & EV_TIMEOUT)
275	ev_feed_event (EV_A_ &ev->to, res & EV_TIMEOUT);
276
277	if (res & EV_SIGNAL)
278	ev_feed_event (EV_A_ &ev->iosig.sig, res & EV_SIGNAL);
279
280	if (res & (EV_READ \| EV_WRITE))
281	ev_feed_event (EV_A_ &ev->iosig.io, res & (EV_READ \| EV_WRITE));
282	}
283
284	int event_pending (struct event ev, short events, struct timeval tv)
285	{
286	short revents = 0;
287	dLOOPev;
288
289	if (ev->ev_events & EV_SIGNAL)
290	{
291	/* sig */
292	if (ev_is_active (&ev->iosig.sig) \|\| ev_is_pending (&ev->iosig.sig))
293	revents \|= EV_SIGNAL;
294	}
295	else if (ev->ev_events & (EV_READ \| EV_WRITE))
296	{
297	/* io */
298	if (ev_is_active (&ev->iosig.io) \|\| ev_is_pending (&ev->iosig.io))
299	revents \|= ev->ev_events & (EV_READ \| EV_WRITE);
300	}
301
302	if (ev->ev_events & EV_TIMEOUT \|\| ev_is_active (&ev->to) \|\| ev_is_pending (&ev->to))
303	{
304	revents \|= EV_TIMEOUT;
305
306	if (tv)
307	ev_tv_set (tv, ev_now (EV_A)); /* not sure if this is right :) */
308	}
309
310	return events & revents;
311	}
312
313	int event_priority_init (int npri)
314	{
315	return event_base_priority_init (ev_x_cur, npri);
316	}
317
318	int event_priority_set (struct event *ev, int pri)
319	{
320	ev->ev_pri = pri;
321
322	return 0;
323	}
324
325	int event_base_set (struct event_base base, struct event ev)
326	{
327	ev->ev_base = base;
328
329	return 0;
330	}
331
332	int event_base_loop (struct event_base *base, int flags)
333	{
334	dLOOPbase;
335
336	ev_loop (EV_A_ flags);
337
338	return 0;
339	}
340
341	int event_base_dispatch (struct event_base *base)
342	{
343	return event_base_loop (base, 0);
344	}
345
346	static void
347	ev_x_loopexit_cb (int revents, void *base)
348	{
349	dLOOPbase;
350
351	ev_unloop (EV_A_ EVUNLOOP_ONE);
352	}
353
354	int event_base_loopexit (struct event_base base, struct timeval tv)
355	{
356	ev_tstamp after = ev_tv_get (tv);
357	dLOOPbase;
358
359	ev_once (EV_A_ -1, 0, after >= 0. ? after : 0., ev_x_loopexit_cb, (void *)base);
360
361	return 0;
362	}
363
364	struct ev_x_once
365	{
366	int fd;
367	void (cb)(int, short, void );
368	void *arg;
369	};
370
371	static void
372	ev_x_once_cb (int revents, void *arg)
373	{
374	struct ev_x_once once = (struct ev_x_once )arg;
375
376	once->cb (once->fd, (short)revents, once->arg);
377	free (once);
378	}
379
380	int event_base_once (struct event_base base, int fd, short events, void (cb)(int, short, void ), void arg, struct timeval *tv)
381	{
382	struct ev_x_once once = (struct ev_x_once )malloc (sizeof (struct ev_x_once));
383	dLOOPbase;
384
385	if (!once)
386	return -1;
387
388	once->fd = fd;
389	once->cb = cb;
390	once->arg = arg;
391
392	ev_once (EV_A_ fd, events & (EV_READ \| EV_WRITE), ev_tv_get (tv), ev_x_once_cb, (void *)once);
393
394	return 0;
395	}
396
397	int event_base_priority_init (struct event_base *base, int npri)
398	{
399	/dLOOPbase;/
400
401	return 0;
402	}
403